import { Component } from '@angular/core';
// import {HttpClient} from "@angular/common/http";
// httpModule在angular4以后被HttpClient取代，http请求模块

@Component({ // 组件的元数据
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent { // app组件的控制器


}
